Merge branch 'devel' of github.com:nim-lang/Nim into devel

compiler/vmgen.nim

@@ -826,7 +826,23 @@ proc genMagic(c: PCtx; n: PNode; dest: var TDest; m: TMagic) =
   of mSubF64: genBinaryABC(c, n, dest, opcSubFloat)
   of mMulF64: genBinaryABC(c, n, dest, opcMulFloat)
   of mDivF64: genBinaryABC(c, n, dest, opcDivFloat)
-  of mShrI: genBinaryABCnarrowU(c, n, dest, opcShrInt)
+  of mShrI:
+    # the idea here is to narrow type if needed before executing right shift
+    # inlined modified: genNarrowU(c, n, dest)
+    let t = skipTypes(n.typ, abstractVar-{tyTypeDesc})
+    # uint is uint64 in the VM, we we only need to mask the result for
+    # other unsigned types:
+    let tmp = c.genx(n.sons[1])
+    if t.kind in {tyUInt8..tyUInt32, tyInt8..tyInt32}:
+      c.gABC(n, opcNarrowU, tmp, TRegister(t.size*8))
+
+    # inlined modified: genBinaryABC(c, n, dest, opcShrInt)
+    let tmp2 = c.genx(n.sons[2])
+    if dest < 0: dest = c.getTemp(n.typ)
+    c.gABC(n, opcShrInt, dest, tmp, tmp2)
+    c.freeTemp(tmp)
+    c.freeTemp(tmp2)
+
   of mShlI: genBinaryABCnarrowU(c, n, dest, opcShlInt)
   of mBitandI: genBinaryABCnarrowU(c, n, dest, opcBitandInt)
   of mBitorI: genBinaryABCnarrowU(c, n, dest, opcBitorInt)

lib/pure/collections/tables.nim

@@ -590,8 +590,11 @@ proc enlarge[A, B](t: var OrderedTable[A, B]) =
   swap(t.data, n)
   while h >= 0:
     var nxt = n[h].next
-    if isFilled(n[h].hcode):
-      var j = -1 - rawGetKnownHC(t, n[h].key, n[h].hcode)
+    let eh = n[h].hcode
+    if isFilled(eh):
+      var j: Hash = eh and maxHash(t)
+      while isFilled(t.data[j].hcode):
+        j = nextTry(j, maxHash(t))
       rawInsert(t, t.data, n[h].key, n[h].val, n[h].hcode, j)
     h = nxt
 

lib/pure/concurrency/cpuinfo.nim

@@ -69,4 +69,4 @@ proc countProcessors*(): int {.rtl, extern: "ncpi$1".} =
     result = affinitySpaceTotal().int
   else:
     result = sysconf(SC_NPROCESSORS_ONLN)
-  if result <= 0: result = 1
+  if result <= 0: result = 0

tests/arithm/tshr.nim

@@ -16,3 +16,5 @@ proc T() =
 
 
 T()
+static:
+    T()

tests/stdlib/torderedtable.nim

@@ -0,0 +1,18 @@
+import tables, random
+var t = initOrderedTable[int,string]()
+
+# this tests issue #5917
+var data = newSeq[int]()
+for i in 0..<1000:
+  var x = random(1000)
+  if x notin t: data.add(x)
+  t[x] = "meh"
+
+# this checks that keys are re-inserted
+# in order when table is enlarged.
+var i = 0
+for k, v in t:
+  doAssert(k == data[i])
+  doAssert(v == "meh")
+  inc(i)
+